I can't read the hp site at the moment , its just plan unreadable on this screen but i will take a look later for you.
dam windows 7 , can just about read anything on this older system.
testing is one thing but this is a joke, can't even get a intel 865 chipset to run its video.

oh the joys of beta testing, i will work out a workround for this or i will go blind trying.

that will tell you about the faults listed by the light fault codes e.t.c
detailed strip and repair is not listed at hp at all.
i found one pdf file on the net for the 1100A but thats a laserjet so its not of any help to you.
i will keep looking but if hp class this printer as old they won't support it with a service manual.

Got the 1220C and 1700 Deskjet Service Manuals if you want to have a look at them. I know it isn't close to the 1100 but their may be some similarities. Just remembered someone who may have it. Post back if you still need it and I will contact them. It may take a week or so to get it as he is in a worse condition than I am.

Sorry but my friend is very ill at the moment....moment is not correct. He is like another collegue and is contantly ill. How are you Dave?

I will keep looking for it and I have a site that I visit often puts printer service manuals on it. I actually have a link to this thread sitting on my desktop so I don't forget you. Shame it wasn't one of about 120 other print manuals.